code: def test_nlargest_boundary_datetimelike(self, nselect_method, dtype):
      # GH#21426
      # use int64 bounds and +1 to min_val since true minimum is NaT
      # (include min_val/NaT at end to maintain same expected_idxr)
      dtype_info = np.iinfo("int64")
      min_val, max_val = dtype_info.min, dtype_info.max
      vals = [min_val + 1, min_val + 2, max_val - 1, max_val, min_val]
      assert_check_nselect_boundary(vals, dtype, nselect_method)
  
file_path: pandas/pandas/tests/series/methods/test_nlargest.py
imports: import numpy
  import pytest
  import pandas
  from pandas import Series
  import pandas._testing
label_desc: Use image node_id 7 for calling the TestSeriesNLargestNSmallest obj's underlying member method code with example usage: obj.test_nlargest_boundary_datetimelike(nselect_method, dtype) without return types